Engine/Transmission (1998.5 - 2002) LP internal screen.

[mhenon]

I just ordered and recieved two. . not one... but two new lift pumps. They were at a good price so I thought having a back-up to the back-up would be a good idea. We travel to Mexico (from Idaho) and back every year so I keep a lot of spare parts with me.

The first thing I've done is to open up the pumps and remove that screen. After playing around with a dead pump... I've come to the conclusion that this internal screen is useless. Given the fine mesh screen in the fuel tank modual... what the hell is that little piece of screen going to stop?? Nada! I also don't like the loose threads hanging off this screen. Just another source of potential problems.

If I've missed any possible reason to keep the screen in place. . somebody let me know. I'm really considering a cleanable, stainless steel, 100 micron screen, by Aeromotive, somewhere before the pump... just not sure anything is needed here with the fuel tank screening in place.



Mike

 

[Gary - K7GLD]

No problem removing that screen - as you observed, it really won't stop much - but DO make dern certain ya use a GOOD quality filter AHEAD of the pump to prove the protection that built-in one doesn't!

 

[Ncostello]

I used a high quality Stanadyne 30 micron fuel filter/water seperator before my lift pump. Didn't help me any as it still died. But something is still a good idea if you don't have the in tank fabric screen. The in tank fabric mesh is super fine and will offer more protection than any steel mesh screen. If it makes it past the mesh in the tank your LP won't have any problem passing it. I had to use a prefilter as I removed the tank screen.



I think the wire screen inside the pump is a carry over from the other basically identical Carter street pumps. They put it in all of them probably cause they may not know or care what application it goes to. Its there in case there is nothing else in a system. In a Dodge diesel... its not needed in my opinion. But on the other hand it don't hurt anything either.

 

[Scheibins]

If you have a warranty. I'm sure that'll void it.

My last lift pump lasted about 5k miles, it's being

tested now. I know something in 60 days or less.



Jay

 

[rmrc]

Lift Pump Mortality

I tell ya,,, the more I read about all of the LP's that just up and die,, the more I'm convienced that the new RASP system is a definite worth while investment! At least you're not depending on an electrical pump.

 

[mhenon]

I tell ya,,, the more I read about all of the LP's that just up and die,, the more I'm convienced that the new RASP system is a definite worth while investment! At least you're not depending on an electrical pump.

Well, I've got 60k miles on my rig. . and haven't lost the first pump yet. I just wanted a spare and the price was so good... I bought two.

I agree with the electical pump being a problem. Constant voltage and 100% duty cycle with varying pressure/flow demands. Got to be a rough environmemt for a little 12 volt pump. I still think an accumulator, of sorts, between the pump and VP44 would help out. Kinda like a surge protector for you computer... something to take out the pressure spikes.

Anyway, with 60k miles... I've got 40k to go before making any changes. I can take the price of the LP... but. . if the VP44 were to go... thats on the dealer.

Mike